The Yoni Chiefdom is a Chiefdom of Sierra Leone located in Tonkolili District, Northern Province, Sierra Leone. [1] It is centred on Yonibana and the Yoni people are part of the Temne and fula ethnic groups.
Francis de Winton led the British Yoni Expedition against the Yoni Chiefdom following a number of disputes with the British allies in the area. [2]